<template>
  <!-- 面包屑导航栏 -->
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>商品列表</el-breadcrumb-item>
  </el-breadcrumb>

  <!-- 卡片视图区域 -->
  <el-card>
    <el-row :gutter="20">
      <el-col :span="8">
        <el-input
          placeholder="请输入内容"
          v-model="queryInfo.query"
          clearable
          @clear="getGoodsList"
        >
          <template #append>
            <el-button icon="el-icon-search" @click="getGoodsList"></el-button>
          </template>
        </el-input>
      </el-col>
      <el-col :span="4">
        <el-button type="primary" @click="goAddpage">添加商品</el-button>
      </el-col>
    </el-row>
    <!-- table表格区域 -->
    <el-table :data="goodslist" border stripe>
      <el-table-column type="index"></el-table-column>
      <el-table-column label="商品名称" prop="goods_name"></el-table-column>
      <el-table-column
        label="商品价格(元)"
        prop="goods_price"
        width="95px"
      ></el-table-column>
      <el-table-column
        label="商品重量"
        prop="goods_weight"
        width="70px"
      ></el-table-column>
      <el-table-column label="创建时间" prop="add_time" width="140px">
        <template v-slot="scope">
          {{ dateFormat(scope.row.add_time) }}
        </template>
      </el-table-column>
      <el-table-column label="操作" width="130px">
        <template v-slot="scope">
          <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
          <el-button
            type="danger"
            icon="el-icon-delete"
            size="mini"
            @click="removeById(scope.row.goods_id)"
          ></el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页区域 -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total"
      background
    >
    </el-pagination>
  </el-card>
</template>

<script>
import {
  getCurrentInstance,
  onMounted,
  reactive,
  ref,
  toRefs,
  computed,
  inject,
} from "vue";
import { useRouter } from "vue-router";
export default {
  setup() {
    // 获取vue实例
    const { proxy } = getCurrentInstance();
    // 获取路由
    const router = useRouter();
    // 注入一个axios
    const axios = inject("axios");

    // 查询参数对象
    const queryInfo = reactive({
      query: "",
      pagenum: 1,
      pagesize: 10,
    });

    // 商品列表
    const goods = reactive({
      goodslist: [],
    });

    // 总数据条数
    let total = ref(0);

    // 页面初始化请求数据
    const getGoodsList = async () => {
      const { data: res } = await axios.get("goods", {
        params: queryInfo,
      });
      if (res.meta.status !== 200)
        return proxy.$message.error("获取商品列表失败！");
      goods.goodslist = res.data.goods;
      total.value = res.data.total;
    };
    onMounted(() => {
      getGoodsList();
    });

    // size-change
    const handleSizeChange = (newSize) => {
      queryInfo.pagesize = newSize;
      getGoodsList();
    };
    // current-change
    const handleCurrentChange = (newPage) => {
      queryInfo.pagenum = newPage;
      getGoodsList();
    };

    // 删除按钮
    const removeById = async (id) => {
      const confirmResult = await proxy
        .$confirm("此操作将永久删除该商品, 是否继续?", "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        })
        .catch((err) => err);

      if (confirmResult !== "confirm") {
        return proxy.$message.info("已经取消删除！");
      }

      const { data: res } = await axios.delete(`goods/${id}`);

      if (res.meta.status !== 200) {
        return proxy.$message.error("删除失败！");
      }

      proxy.$message.success("删除成功！");
      getGoodsList();
    };

    // 添加商品
    const goAddpage = () => {
      // 路由跳转
      router.push("/goods/add");
    };

    // 时间格式化
    const dateFormat = computed(() => {
      return function (originVal) {
        const dt = new Date(originVal);

        const y = dt.getFullYear();
        const m = (dt.getMonth() + 1 + "").padStart(2, "0");
        const d = (dt.getDate() + "").padStart(2, "0");

        const hh = (dt.getHours() + "").padStart(2, "0");
        const mm = (dt.getMinutes() + "").padStart(2, "0");
        const ss = (dt.getSeconds() + "").padStart(2, "0");

        return `${y}-${m}-${d} ${hh}:${mm}:${ss}`;
      };
    });

    return {
      queryInfo,
      ...toRefs(goods),
      total,
      getGoodsList,
      handleSizeChange,
      handleCurrentChange,
      removeById,
      goAddpage,
      dateFormat,
    };
  },
};
</script>